Printing mechanism.



H. o. l(1111111151511I PRINTING MEGHANISM.

APPLICATION FILED JULY 30,1910.

H. d, QAMMETER. PRINTING MBGHANISM. i APPLICATION FILED JULY 30, 1910.

2 SHEETS-SHEET 2.

- UNITED vsmTEf-s PATENT oEjrroE.

vHARRY o. GAMMETEE, OE BRATENAHL, OHIO, AssIGNoR To THE AMERICAN MULTT- GRAPH COMPANY, OE CLEVELAND, OHIO, A CORPORATION oF OHIO.

PRINTING MECHANIsM.

Original application filed March 28, 1906, Serial No. 308,379. `Divided andthis application filed July 30,

` 1910. Serial No. 574,660.

To all whom may concern:

Be it known that I, lHARRY C. GAMMETER,

' a citizen of the United States, and residing land'enact-desc'ription, reference being had to *the 'accompanying drawings.

This invention'is designed to provide a simple and efcientprintin'g device adapted yfor embodiment'in .asmall Otlice machine.A

l'n'nountedv in longitudnial'rows 'on a remov` l105` .able member, the removability of such mem- The machine prints'. from individualV type ber allowing onejorm to be'assem'bled while another. is printing, and allowing. y forms, when; assembled, tonremain ready for rsubsequent use'by the lsimple removal of the l form-carrying member from the machine.

The present invention'is a division of my V`application #308,379, -IedjMmh 28, 1906 i.' L--and'relates primarily to thek removable fea-A.

' ture above referred to. The features of j lthe platen constructionl and-operation shown',

are covered in that application, as well as suitable inking means, not here shown, but which may' cooperate with vthe printing mechanism shown.

:In the drawings, .Figure l is a longitudinal vertical central section through the print-,

v ing mechanism Fig. 2 is a transverse vertical section; and Fig. 3 broken away.Y

Referring b letters .to the embodiment shown in the rawing, A and A1 are a pair of rigid end plates mounted on a suitable hollow base A2. The end plates occupy a is an end view, partly recessed portion in the ends ofV the base and A i shown. On the exterior of the body are iirmly fastened to those ends byyscrews. This forms a very stil' and rigid frame.

B designates a shaft mounted in sultable bearings carried by the' two end, plates ofthe frame. On the end of this shaft is a crank C, by which it may be rtated.

D Kindicates the printing drum, thebody of which is a hollow webbed structure, a

i v'connected with it `are parallel overhanging F rails d, held equidistant by the body and presenting type channels between them, the type having grooves in their opposlte edges the sh tt.

Patented Julyas, 1911.

the set screw is loosened, the shaft B may be drawn out endwise, and the drum removed for storage with its forms oror the assemblage of type into its channels or the distribution of type already therein.

Coperating with the printing drum is nhimpression drum-F, mounted within the ase on a shaft-G. The drums Dand F are ,geared together .by the gears H and I rcs' actively. The gear I Vis secured to the rum F, while the gear H is mounted on a frame-bushing a3, but is'driveny by lugs 'b3 on the'jbushing b2 rigid with the shaft'B. v

The impression platen with its covering of removable soft material f1 is of the same diameter as. the printing drum with the type thereon.' Thus, in the successive rotations of the drums, any type bears on the same portion of the impression platen.' This enables the impression platen to be overlaid or underlaidto provide for inequalities in the type, orextra heavy impression at particular places. The soft covering fl issecured at one end ina slot f2 in thedrum, While the other end is held by a spring bail f3 bending the covering into a recess f4 inthe drum.

As already mentioned, the feature of the platen-covering, above described, is covered l in the parent application, of which this is a division. Another feature here shown and covered in that application is the mecha- -nism for adjusting the impression platen.

This mechanism is as follows The shaft G of the impression platenv is shown as having. eccentric extensions g, -g mounted in,

bushings carried by the end members of the 'frame base. On the-extension g is an arm ,J by which the shaft may be'rotate'd toadjust the impression platen with reference to the printing drum. To lock this lever J lin various adjusted positions, while all0wing its convenient release, I provide'the ring K which'seats in an annular'groove in the end framfinfember. A. The'headsmffscrews lc confine this ring in the vgrove while allowwhereby they may be held in such channels. ing it movement therein, and thumb' screw k1 furnishes means for clamping the ring in any desired position. Mounted on the ring is a detent spring arm .I is adapted to engage. A projection or pin on the inner side of this arm comes opposite an opening or depression las in the spring, holding the arm in place. To release the arm,the spring is pressed toward the end plate of the machine.

No means is shown in the drawings for inking the type carried by the upper drum. Any suitable means may be employed, as an inking roller or an inking ribbon, both shown in the application of which this is a division. Other means may be employed, if

` desired.

well understood.

number of copies have been printed, the

,en and set aside for futurey use.

i Ting mechanism is `y machine, lthe type, which are short pieces of metal grooved on their opposite sides, as shown at T in Fig. 2, are assembled on the drum between the rails thereof and are held against longitudinal displacement by suitable means, .as plugs between the rails, or other mechanism, as is The assemblage of the type may be conveniently effected by loosening the set screw E and removing the drum, and after it has been loaded by returning it to place. Whileone drum is in use, another sma'ller drum may be having type assembled in it. Similarly, after the desired In the operation of drum'maybe removed with the form there means I am enabled, notonly'toA accomplish Vvassemblage 'or distribution while the printin use, but I also may preserve forms which are assembled, so that, if they are Vagain desired, it will not be necessaryv to reassemble the form; or portions of the -form may be .preserved and 'other' portions assembled anew, as desired.

These are-'features of much importancein I enabling a device of vthis kind to be of the utmost practi'cability in producing circular` letters and other. office forms;

k2 with which the vgrooved type between them,

By thisl Having thus described my invention, what I claim is 1. The combination, with a platen, of cooperating .rotatable mechanism including a member for carrying 'a page form of type held individually and loosely in assembled lines parallel with the aXis of rotation and allowing its removal intact both as to words -and lines, there being a non-printing space between the ends'of-the page form in the machine, and means accessible within such space for locking the page form in the machine, the. said member carrying the page form comprising a vseriesof straight parallel overhanging rails together with means counected with the various rails and holding them in such relation to each other that adjacent rails may be able to conlinea line of whether the member be in the machine or out-,whereby a page form may be assembled outside of the machine or removed andpreserved intact afterprinting in the machine.

2. VIn a' duplicating machine, the combination, with a pair of frame plates having a space between them open above, of.an impression platen mounted between said plates, a' shaft removably mounted in the plates above the platen, a printing drum adapted to carry longitudinal rows of individual type franie-plates and being'removably mounted on said shaft, and fa radial set screw whose' l Copies of this patentrmay be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.

vsaid drum standing betweenV said' 

